| 摘要 |
The present invention provides a catalyst system capable of catalysing the carbonylation of an ethylenically unsaturated compound, which system is obtainable by combining:
a) a metal of Group VIB or Group VIIIB or a compound thereof,
b) a bidentate phosphine, arsine or stibine ligand, and
c) an acid,
wherein said ligand is present in at least a 2:1 molar excess compared to said metal or said metal in said metal compound, and that said acid is present in at least a 2:1 molar excess compared to said ligand, a process for the carbonylation of an ethylenically unsaturated compound, a reaction medium, and use of the system. |
